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Pre-ICFES - Biology
Cell BiologyPart 1
Ms. Marcos - 2010-2011
Cell Structures and Functions
Take the Cell Biology Challenge!
A prokaryotic cell
A eukaryotic cell
Prokaryotes vs. Eukaryotes
Us vs. Them -Eukaryotes and Prokaryotes
Celula Animal
Celula Vegetal
Study Tip: Make a table
Study Tip: Draw a Venn Diagram
Plant vs. Animal Cells
How will the cell respond?
Movement Across a Membrane
•Simple Diffusion
•Osmosis diffusion of WATER
Cell Membranes – What are the parts?
What can get across a membrane?•Ions?•Sugar?•Protein?•Water?•Oxygen?
•What rules define whether something can enter/exit a cell via diffusion?
Define the terms:
Diffusion
Facilitated Diffusion
Active Transport
Give examples
Endocytosis and Exocytosis•Is this active or passive transport?
Three types of Endocytosis
More questions...
•How big are cells?•What needs to enter/exit a cell?•How does it get in/out?•What determines how large a cell can get?•How can cells get larger and still function?
•Why do cells need to divide?•What must cells do before dividing?
Mitosis:
What is happening at each stage?
http://www.cellsalive.com/mitosis.htm